Why are China's cutting-edge manufacturing industries such as precision machining equipment so backward?

2021-03-23 14:13:25 admin

Why are China's cutting-edge manufacturing industries such as precision machining equipment so backward?

High technical integration requirements.

Machining is not simply a high-end machine tool that can solve all problems. It should be a whole set of things from material processing to heat treatment and other process treatments, to processing procedure design, to quality inspection, to use environment control. For example, even if there is a top lathe such as Demagi, which is processed and measured on the lathe, everything is the size of the design, but once the lathe is taken off, the residual stress/force generated by the working condition in use , Will lead to size/fit deviation. In addition, the more precise the small parts, the more important the control of environmental variables, such as temperature/humidity/stress distribution/dust in the air, etc. You can imagine the clean room of a German/Japanese precision machining center. Precision machining must integrate top technologies in all aspects of material processing/advanced control and servo system/environmental variable control/precision measurement. At present, my country lacks precision servo motors, real-time control systems, and hard technology accumulation for material handling and process standardization. . .

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2. Process and quality management methods can't keep up.

Precision machining is an industry with a strong accumulation of technology, but domestic machining does not have a mechanism that can realize technology control/transfer. Many of them rely on the experience of processing masters. The difference is like KFC's standard food processing procedures and specialty restaurants. Master Chef System".

  3. Who will do it? In private enterprises, most of the machining operations in Jiangsu, Zhejiang, Shanghai and Guangzhou are small and medium OEM factories. Without their own brands, there is no motivation for technological innovation. After the economic crisis, there is a trend for small and medium-sized manufacturing industries to transform and have independent technology patents and products. But the bottleneck is the lack of technology accumulation. For example, if you want to process standard screw parts, but the material processing technology does not meet the requirements, what you have made is that no one specializes in making screws abroad, which has high reliability and long service life. Want to do it? How motivated do you have achieved what has been achieved abroad to do it from scratch on your own? Risking the double uncertainty of technology and funding? State-owned enterprises and the aerospace industry have some precision-processed things in them, but it will take time to be delivered to civilian use.